package com.example.blogServer.config;

import com.example.blogServer.interceptor.JwtUserTokenInterceptor;
import com.example.blogServer.json.JacksonObjectMapper;
import com.fasterxml.jackson.databind.json.JsonMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2WebMvc;

import java.util.List;

/**
 * @author Spark
 * @version 1.0
 */
@Slf4j
@Configuration
@EnableSwagger2WebMvc
public class WebMvcConfiguration  extends WebMvcConfigurationSupport {

     @Autowired
    private JwtUserTokenInterceptor jwtUserTokenInterceptor;

    //重写WebMvcConfigurationSupport中注册拦截器的方法
    protected void addInterceptors (InterceptorRegistry registry){
        log.info("开始注册自定义拦截器");
        registry.addInterceptor(jwtUserTokenInterceptor)
                .addPathPatterns("/user")
                .excludePathPatterns("/user/login");



    }


    /**
     * 通过knife4j生成接口文档
     * @return
     */
    @Bean
    public Docket docket1() {
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("blog项目接口文档")
                .version("1.0")
                .description("blog接口文档")
                .build();
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("用户接口")
                .apiInfo(apiInfo)
                .select()
                //扫描包包名不能错
                .apis(RequestHandlerSelectors.basePackage("com.example.blogServer.controller"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

    /**
     * 设置静态资源映射
     * @param registry
     */
    //注意静态资源映射
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");

    }

    /**
     * 扩展springMVC消息转换器
     * 消息转换器可以对后端返回给前端的数据统一转换处理
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建一个消息转换器对象
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        //为消息转换器设置一个对象转换器,对象转换器可以为java对象序列化为json数据
        converter.setObjectMapper(new JacksonObjectMapper());
        //将自己的消息转换器加入到容器中
        converters.add(0,converter);
    }

}
